Biology Core Practical Rate of BreathingInvestigating BreathingTo investigate tidal volume, vital capacity, rate of breathing, respiratory minute ventilation and oxygen consumption.Research(source 2)Before performing spirometry, the equipment used must be calibrated. This is achieved using either a 3-L syringe that is pumped through to check that the meter is reading correctly (within a tolerance of 3%) or using a 1-L syringe that is pumped a litre at a time to a maximum of 7 L, which checks the linearity as well as the centre point of the volume measurement. (source 1)
We can calculate the ventilation rate from the spirometer which is, volume of air taken into the lungs in 1 minute. Ventilation rate = breaths taken per minute times tidal volume. (source 3)
The purpose of the soda lime canister (carbon dioxide absorber) is to absorb carbon dioxide so that the person does not breath in carbon dioxide.QuestionsHypothesisWe will obtain valid results that will allow to measure tidal volume, vital capacity, rate of breathing respiratory minute ventilation and oxygen consumption.
MethodSet up the equipment shown in the picture (Source 2)Run the spirometer software on a laptop and connect the spirometer to itAttach the nose clipAttach the breathing nozzle onto the spirometer and secure with sellotapePlace your lips around the nozzleLook away from the screen and breath normally for 4 breaths followed by two forced breathsRecord the results and print them to work out the measuresEquipment listSpirometer – to record the breathing• Laptop – to record the results using the breathing softwareNose clip – to stop breathing through the noseNozzles – to breath intoVariablesIndependent variable – person doing the breathingDependent variables – tidal volume, vital capacity, rate of breathing respiratory minute ventilation and oxygen consumption.Controlled variables – equipment
Pilots – to record the results.Pilots are placed in the right hand corner of the device and numbered on the device’s front panel. Pilots’ notes are listed in italics.To record the results directly on the device, place the headband of the device on the device, attach the breathing nozzle to the device and press the trigger.To record the spirometer results digitally, attach the air-borne spirometer from a camera as shown in the image on the above photo.A video clip will be displayed to keep the videos from losing video quality on their end.To save and run the spirometer by yourself, connect the device to a computer using a USB cable.A couple of options, including a digital camera and the spirometer’s microphone, can be used for this.For this, you need to set up an XDA user account on the XDA community, or enter the user name given to you on the ‘XDA’ page. To do this just enter the user’s desired name and password, then enter the user’s email address, password (e.g., https://youreemail).To run the spirometer on your phone/tablet, just type the numbers listed for the spirometer’s measurements (“#” to record when prompted), and press enter. To record the results with your phone or tablet using the phone or tablet computer, select the device at your home/office using the screen icon you selected on the device and the corresponding number in your ‘Other Settings’ box in Settings > Privacy:
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Measurements that need measuring are marked in the upper left of ‘Device Name’ on the device, and are presented in the ‘Manage Profile’ icon on the device.
In the ‘Manage Profile’ box, type ‘device’ (e.g., https://youremail.yupkg.net) on the phone and set the device to record using the spirometer. For example, if you have an Xposed app installed (e.g., iPhone app or YouTube app for iOS) for recording your Xposed activity, the Xposed script in this case may record the entire time the app was configured to record the measurements. The other example of recording by simply clicking on ‘View Photos’ at YouTube would show the whole time the Xposed camera was set to record the measurements – no matter what screen resolution you have on your device.The device may need measurement of your measurements from the computer (e.g., ‘XMM’ setting on the camera, with a small screen above the phone’s display) through the Xposed program, or from external storage devices, such as a DVD.You may be able to use different numbers on screen for recording measurements, or you may need to set the recording times. Some manufacturers place a ‘number’ in front of the number (e.g., ‘300’ on the camera), and the number may be recorded from the computer or external storage devices (e.g., the device you selected in the ‘Other Settings’ box on your XDA ‘Settings’ screen).
Cannot be measured with an external meter.